Chuck.



- PATENTED JUNE 19, 1906. P. TEGMAS.

APPLIGATICN FILED JAN. 23.1904.

1 UNITED srarns PHILIP THOMAS, OFNEW ag an T OFFICE.

YORK, n. Y., AssIeNoa OFO NE-HALF To *CHUCK-l Specification of LettersPatent.

Patented June 1 906. I

Appli dation filed January 23,1904. Serial'llo. 190.273 I To all whom itmay concern:

Be it known that I, PHILIP THOMAS, a citizen of the United States,residing at New York city, county of Kings, and Stateof New 5 York, haveinvented certain new and useful Improvements in Chucks, fully describedand represented in the following specificationand the accompanyingdrawings, forming apart of the same. 1o This invention relates to animproved chuck adapted especially for machines used in boring, tapping,stud-setting, and forsimilar purposes, theobject of the invention being,to provide a simple, efficient, and durable l 5 construction by'whlchthe tool or tool-holder ,the'work by reversal of the action of thechuck. r In the accompanying drawings there is shown a constructionembodying all the features of the invention in their preferred form, andthis construction will now be described in detail and the featuresforming the invention specifically pointed out in the claims. I In thedrawings, Fi ure 1 is a sideview of the chuck in position or work withthe toolholder clutched to the spindle. Fig. 2- is a central section ofthe chuck in the same position. Fi 3 is a view similar to Fig. 2, butshowing t e chuck during'withdrawal of the tool from the work. Figs. 4,5, 6, and 7 are cross-sections on, respectively, the lines 4, 5, -6 and7 of Fig.2.

Referring to said drawings, A is the drill spindle or shaft, shown asmountedin the usual sleeve X, having the rack 10, by which the spindleis'raised and lowered. lowerend of thedrill-spindle A is attached in theusual manner the shank 11 of the chuck, which shank is formed on orfixed to the u l per'part B of the bod or casingof the chucli, whichforms the too -driving part or driver of the clutch, this driver B beingconnected to the lower I art O of the body or casing of the chuck, w ichlower part forms a piniona screw-cap 1) taking over a s ppo y shoulderon the part B and screwed onto the part C. The tool-holder E is carriedby the tool-drivin s indle F,whichextends through the body 0%1: e chucktothe shank 11 and on which the chuck-body B O has longitudinalmovement, so as to clutch thedriver B to the tool-holder for directdriving of the latter during work follows: One part 12 of .a ringclutch' is may be driven directly from the spindle dur-- but other meansfor securingthe clutch ring mg thew'ork and quicklywithdrawn from To thefrom the tool-holder for reversing therota: tion of the tool-holder andwithdrawingfthe toolfrorn the work. The clutch construction and meansforre versing the rotation of the tool-holder areas formed on or secured tothe inner side of the driver Eat the top, so as to inclose the upper endof the spindle F, and the-other part 13l0f the clutch is fixed to thespindle .13. "Dhe clutch-ring 12- is shown as 'madeseparate from thecasing of driver B and secured thereto by pins ,1, which are driven intoholes formed partly in the clutch-ring and'casin'g;

. 7 may be used. The driver B carries an internal gear 14; which throughone or more intermediate pinions 15 (three being shown, as. ispreferred) drives gear '16, splined on the splndle F, the pinions 15being shown as mounted on sCrew-studsfl, set into the lowerpart C of thechuck-body. The part C car ries a stop 17, which passes through'anopening to the outside of the chuck body or casing O, but is normallypressed inward within or 'even with the outer surface of th e'chuckbodyby spring 18, which presses against a ring 3 cat 1e stop, and the stopcarriesat" its inner end a pin 4, adapted to enter a depre'ssion 5 inthe spindle F to permit thestop 17 8 5 to be drawn in by the spring 18,and when it is forced out of the depression onto the ringfi on spindle Fforces thestop- 17 outward, so as to project from the chuck-body. Thisstop 17 when thus projected engages a' stop 19, carried by some suitablepart ofthe machine, so as to move up and down with the chuck, and shownas carried by arm"G, securedto and depending from'sleeveX. The spindle Fis provided with a stop-ririg 20, moving in a recess in the lower partof r body O,- theshoulder-at the upper end ofthe recess limiting themovement of the chuck body B O in one direction, and the movement 41closing the bottom of the recess which-is preferably made detachable, ass own f's'o that by removing this rin the tool-holder '1' and tounclutch the driver .13 55 in the other direction being limited by theI00 I 5 mg no driving of which case-the lower end of the to ol-holder Eceivin 'ttmi holdin intwo parts 21 22,-.held to trio sleeve I J onthespindle F,

5. regulate Wlll simplybe'suitably constructed for re atool. Iprefer,how ever, to combine t novel features of my chuck with means forfrictionally driving the tool, and suchaconstructio'n is illustrated. Inthis construction the tool-holder is made ether by a cap 23, 1ematerial, being 22 and between and the parts of I ctiompieces 7, ofsuita used between the parts 21 the part 22 and the. cap 23,

the tdol-hdlderbeihg adjustably secured together by which sh screws 24,so that the pressure at of the toolis rmitted may he as desired. Th part22 of the tool-holdercarries the shank' 25, which receives the tool HShow asa screw-threading tap, and this tool is held in the tool-holder ba spring-catch 8 criteria a notch in the too s ank' which catchislociedto revent withdrawa'l of the tool and unlocks by an eccen- 9' on shank25. The operation of the chuck will lie-understoodfrom a briefdescription in connection withthedrawings. Assumin that the arts are inthe positlon shown in %ig. 3, wit the chuck body B C drawn into its 11perposition so as to unclutc i the chuck body from the s indie F, thechuck is now moveddownwar bythe spindleAin theusual manner,and thepressure of the tool H a ainst the work I-as the tool strikes the latterolds 'thetool and tool-holder E" against downward movement, and thechuck-body B C then moves downward on the shaft F into the positionshown in Figs. 1 and 2, in which the clutch-rings 12 13 engage. Thismovement of the'chuck-body B C also moves the pin 4 from the surface ofthe ring 6 to a position 0 posite the depression, and the stop 17 is awninward by spring 18, so that the stop 17 is released from engagementwith thestop I9 and thelower part of the chuckhody b permitted to rotatewith the driver B and spindle F. The chuck then rotates as a parts ofthe tool-holder slip ing on each other to avoid dam to the tool or workwhen the I end of'the W85: is reached or the resistance 0 otherwise'inexcess of the friction, there hethepinions 15 on gear 16 in bisection,but all theears being simply carried around in their tions by thechuclebcbdy.

en the work is done and the tool to be withdrawn, the a1'e-di'aw11u )wsholder and spindle F bein helddo'wnward b the work and the clutc -rin' s12 13 are c th us unclutched to release the driver B from fthd spindle Fas shown in Fig. 3. This l hiovement of t e chuck-body also draws the oF17, upward, so that the pine moves out oft e'depression forced outwardI the movement of the fixed relative P981" I shaft A and'chuck-body B Qrd 'on the spindle F, the toole chuck-body rotates until the stop 17engages the stop 19, and the part 0 then stops while the driver Bc011tinuse to rotate with the shaftA. By this rotation of the'driver BWhile the part C is held stationary the interior gear 14, throu h inions15 and gear 16, rotates the spin e in the opposite direction to themovement of the driver B and shaft A and at a higher rate of speed, sothat the tool H is thus reversed and quickly withdrawn from the work I,the position of the parts duriny withdrawal being clearly shown in Fig.3. T 1e tool having been withdrawn, the parts remain in the positionshown in Fig. 3 until the tool is again moved .down into contact withthe work and the chuck-body B -C shown, but that modifications may hemade in the form and arrangement of parts in the chu ck illustrated,while retaining the features claimed.

What I claim is 1. In achuch, the combination witha tool- (lrivingspindle, of a driver movable on the spindle toward and from the work, aclutch for connecting the driver to the spindle for direct driving ofthe latter and operated by the movement of the driver on the spindle toclutch and unclutch the driver and spindle, an internal gear actuated bythe driver, a gear on the spindle, one or more pinions between theinternal gear and spindle-gear, a sup ort for pinicns rotating with thetoo and driver when the parts are clutched, and means controlled by themovement of. the driver on..,the spindle for holding the pinion-supportstationery when the driver and spindle are uncl-utched. J In a chuck,the combination with a tooldriving spindle, of a driver movable on thespindle toward. and from the work, a clutch for connecting the driver tothe spindle for I direct driving of the latter and operated by driver onthe s indie to the driver and spindle, an internal ear carried by thedriver,- a gear on the spindle, one or more pinions between theintern-a1 gear and swindle-gear, a pinionsupport connected to the driverand. moving toward and from tlie worl\: therewith, a stop carried by thepinion-support, and a cani on the spindle controllin the stop to sto thepinion-su port when the driveris move into position or unclutching thedriver and spinpinion-support when the clutch and unclutch dle andrelease the parts are clutched.

3. Th 1 having the driver B end the lhlOIi-SHPPOYC 5 onto the sleeve 6on spin- C connected together to permit the driver B ".65 'Fdie'F, andthe stop is thus to rotate independently of the support(], of

with the. driver B during a part of a rotation It is to be understoodthat the invention is 7 not to be limited to the specific constructien ecombination with the chuck-body the fixed stop 19, so I internal gear 14on the driver B, pinion or inions 15 carried by the support C,toolnolder spindle F within the chuck-body on which said body has alimited movement to a ainst rotation when the driver and s ind e areune'lutched and releasing it W on the parts are clutched, substantiallyas described.

4. The combination with the chuck-body having the driver B and thepinion-support C connected together to permit the driver B to rotateindependently of the support C, of internal gear 14 on the driver B,pinion or pinions 15 carried by the support C, tooliolder' spindle Fwithin the chuck-body on which said body has a limited movement to wardand from the Work, gear 16 on the spindle F meshing with inions 15, 'aclutch for connecting the spind e, F to the driver B, controlled by themovement of the driver 3- toward and from the work, stop 17 carried bythe support C and adapted to engage a' stationary stop when advanced,and means for advancing and retracting the stop by the clutching andnnclntching movement, substantially as described.

5. The combination with the chuck-body having the driver B and thepinion-support C connected therewith to pormit the driver B to rotateindependently of the support C, of internal gear 14 on the driver B,pinion or pinions 15 carried by the support C, toolholder spindle Fwithin the chuck-body on which said body lease limited movement to wardand from the work, gear 16 on the spin dle F meshing with .inions' 15, aclutch for connecting the spindle to the driver it con" trolled by'themovement of the driver B to-' ward and from thework, stop 1'? carried bythe tool-snpport, spring 18 and a cam-sun face on the tool-spindle foradvancing and retracting the stop, and fixed st op19 engaging eeaoeewitnesses.

the stop 17 when advanced, substantially as described. v i a I 6. Thecombination. with the chuck-body parts B, O, of the holdingcollar D, aninternal gear and pinionscarried bythe respoc-c tive parts B, C,tool-spindle F within the body B, C, gear 16 movable on said spindle,

said spindle, and body being movable roletively to each otherfor,clutching and un;

clutching, clutch members 12, 13 carriedby the part B and thetool-spindle, and-a stop brought into action by the unclutching movementfor holding the part 6- stationary when the clutch members aredisengaged, substantially as described. 1

7. In a tool-holder th rotary case and a sleeve ad with relation to theother and provided with combination of a ov'able axially one;

gears and with clutch members adapted to be i engaged and disen aged bythe axial move ment of one part re ative to the other',- f'an -independently-rotatable ring carrying a pinion I in mesh with said gears,a stationarypa'rt and means operated by the endwise movement of one partof the holder relative to the other for v locking said ring to andreleasing int-from said stationary part, subs'tantial as described.

8. In a tool-holder the combination of an internally toothed case,provided with a clutch member and an externally-toothed sleeve movableaxially in said case and provided with a clutch member adapted to beengaged with and disengaged from that in said case by the axial movementof one part with relation to the other, a stationary mem her, a ringinterposed between said case and sleeve and carrying one or more pinionsin mesh with the gear-teeth thereof and provided withone or moredogsoperatedby the end;

wise movement of said sleeve to lock saidring to and release it fromsaid stationary member, substantially as (lGSGllbBd;

In. testimony whereof I have hereuntr eeti my hand in the presence oftwo subscribing" PHILIP THOMAS. Witnesses: 1 W. H. KENNEDY,

J. A. Grnavns.

